'Punk' doesn't mean Mohawks and safety pins. It's about not conforming.
Whenever I played Columbus, Ohio, I dropped in to see my close friend, a medium who had mysterious powers. Her Indian guide was Mohawk.
An hour before I got cast in [Victorious] they called and asked if it'd be okay for them to do ANYTHING they wanted with my hair, even a blue mohawk or a bald head and I eagerly said yes!
Those guys who want to have the Mohawk...which, to me, is the new business casual.